FAN5350MPX

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5350MPX is a synchronous buck regulator from onsemi's FAN5350 series, designed for high-efficiency power conversion in portable and industrial applications. It integrates a 3MHz fixed-frequency PWM controller with low RDS(ON) high-side and low-side MOSFETs to minimize external component count and board space. The device supports an input voltage range of 2.7V to 5.5V and delivers up to 1.2A output current. It features adjustable output voltages via an external resistor divider, offering flexibility for various digital loads. The regulator includes comprehensive protection mechanisms such as over-current protection, thermal shutdown, and soft-start functionality to ensure reliable operation under fault conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification with internal power switches for enhanced efficiency and reduced footprint
• Operates at a fixed 3MHz switching frequency to allow the use of small passive components
• Includes built-in protection features like over-current limiting and thermal shutdown for system safety

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring efficient step-down conversion
• Industrial control systems needing stable low-voltage power rails
• Communication equipment powering digital logic circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix (e.g., MPX) against the manufacturer's latest datasheet to confirm package type and tape/reel specifications. Ensure compatibility with your PCB footprint design, particularly for the MLP-12 package. Check for any recent lifecycle notices or obsolescence warnings directly from onsemi before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, high-efficiency solution is required for converting 5V or similar inputs to lower voltages for digital loads. Consider the 3MHz frequency trade-off between component size and electromagnetic interference. Verify that the load current requirements do not exceed the 1.2A limit and that the input voltage stays within the specified 2.7V to 5.5V range for optimal performance.

Voltage Regulators - DC DC Switching Regulators Part Context

The FAN5350MPX belongs to onsemi's FAN5350 series of synchronous buck regulators, which are part of the broader portfolio of power management integrated circuits (PMIC). This series is engineered to provide high efficiency and small form factors for modern electronic devices. The MPX suffix typically denotes a specific packaging variant, often associated with surface-mount technology suitable for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements may include other models from the FAN5350 series with different suffixes indicating varied packages or temperature ranges. Cross-reference pinouts and electrical characteristics carefully when considering alternatives from other manufacturers to ensure functional compatibility.